<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		.s1{
			width: 200px;
			height: 200px;
			background-color: red;
			margin-bottom: 40px;
		}
		.s2{
			width: 200px;
			height: 200px;
			background-color:rgb(0,128,0);
			margin-top: 100px;
			
		}
	</style>
</head>
<body>
	<!--  -->
	<div class="s1"></div>
	<div class="s2"></div>
	
</body>
</html>